Substitute for Star Anise in Whole Slow Cooker Poached Chicken

I have anise seed and I have Chinese 5 spice powder. Can I substitute one or both of those for the star anise in Nicholas Day's Whole slow cooker poached chicken? I am making it today and my whole foods is completely out of star anise. If I can sub, what are the appropriate amounts/ratios?

two other ways to think of this. Star anise is usually used in Thai or Chinese cooking, so go for those flavors (even if not exactly the same). Also, star anise, while sharing a name with (regular) anise, is a sharper, some say richer flavor. So include something sharp, like (more) fresh black pepper, Szechuan pepper or a little fresh chile pepper.